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Recent content by TLAR320

  1. TLAR320

    Biplane wing design?

    Questions: 1. Why do so many high performance biplanes use different airfoil sections for the upper and lower wings? Example, the Pitts biplanes use NACA 65 015 for the upper wing and NACA 0012 for the lower. 2. Why does the Pitts / Skybolt / Stardusters ect. sweep the upper wings back 6...

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